How can i use same form for insert and update in php?

I'm trying to use a single form for inserting a new data and updating the value of an existing data.I have no trouble displaying the form, fetching the data and updating it, but when I'm trying to insert a new data, the form does not appear. Here's my view

  
  
  

    

      Package Name
      
    
    

      label for="short_name" class="control-label">Inclusions
      <?php echo !empty($packages->tour_location) ? $packages->tour_location : ''; ?>
    
    

      Description
      <?php echo !empty($packages->description) ? $packages->description : ''; ?>
    
    

      Price
      
    
    

      Status
      
        >Active
        >Inactive
      
    
    

      Images
      

        Choose file
        
        
        
      
    
    
    

    

      
      Cancel
    
  

My model

 public function insert($data = array())
    {
        if (!empty($data)) {
            $this->db->insert('packages', $data);

            return $this->db->insert_id();
        }
        return false;
    }
public function edit($id)
    {
        $query = $this->db->get_where("packages", array('id' => $id));

        return $query->row();
    }

    public function update($data, $id)
    {
        return $this->db->update("packages", $data, array('id' => $id));
    }

And then Controller

public function insert_package()
    {
        $packageData = array();

        // If add request is submitted
        if ($this->input->post('packageData')) {
            // Form field validation rules
            $this->form_validation->set_rules('title', 'Package Name', 'required');
            $this->form_validation->set_rules('tour_location', 'Inclusions', 'trim');
            $this->form_validation->set_rules('description', 'Description', 'trim|required');
            $this->form_validation->set_rules('cost', 'Price', 'required');
            $this->form_validation->set_rules('status', 'Status', 'required');
            // $this->form_validation->set_rules('image', 'Images', 'required');

            // Validate submitted form data
            if ($this->form_validation->run() == true) {
                $ori_filename = $_FILES['image']['name'];
                $update_image = time() . "" . str_replace(' ', '-', $ori_filename);
                $config = [
                    'upload_path' => './images',
                    'allowed_types' => 'gif|jpg|png',
                    'file_name' => $update_image,
                ];

                $this->load->library('upload', $config);

                if (!$this->upload->do_upload('image')) {
                    $error = array('error' => $this->upload->display_errors());
                    $this->load->view(base_url('admin/packages'), $error);
                } else {

                    $image = $this->upload->data('file_name');
                    $packageData = array(
                        'title' => $this->input->post('title'),
                        'tour_location' => $this->input->post(htmlentities('tour_location')),
                        'description' => $this->input->post(htmlentities('description')),
                        'cost' => $this->input->post('cost'),
                        'status' => $this->input->post('status'),
                        'upload_path' => $image
                    );
                    $img = new Admin_model;
                    // Insert member data
                    $img->insert($packageData);
                    $this->session->set_flashdata('status', 'Package InsertedSuccesfully');
                    redirect(base_url('admin/packages'));
                }
            }
        }

        $data['title'] = 'Add Package';

        $this->load->view('../admin/template/admin_header');
        $this->load->view('../admin/template/admin_topnav');
        $this->load->view('../admin/template/admin_sidebar');
        $this->load->view('../admin/packages/manage_package', $data);
        $this->load->view('../admin/template/admin_footer');
    }

    public function edit_package($id)
    {
        $data['title'] = 'Update Package';

        $this->load->view('../admin/template/admin_header');
        $package = new Admin_model;
        $data['packages'] = $package->edit($id);
        $this->load->view('../admin/template/admin_topnav');
        $this->load->view('../admin/template/admin_sidebar');
        $this->load->view('../admin/packages/manage_package', $data);
        $this->load->view('../admin/template/admin_footer');
    }

    public function update_package($id)
    {
        $this->form_validation->set_rules('title', 'Package Name', 'required');
        $this->form_validation->set_rules('tour_location', 'Inclusions', 'trim');
        $this->form_validation->set_rules('description', 'Description', 'trim|required');
        $this->form_validation->set_rules('cost', 'Price', 'required');
        $this->form_validation->set_rules('status', 'Status', 'required');

        if ($this->form_validation->run() == true) {
            $current_image = $this->input->post('current_image');
            $new_image = $_FILES['image']['name'];

            if ($new_image == TRUE) {

                $update_image = time() . "-" . str_replace(' ', '-', $_FILES['image']['name']);
                $config = [
                    'upload_path' => './images',
                    'allowed_types' => 'gif|jpg|png',
                    'file_name' => $update_image,
                ];

                $this->load->library('upload', $config);

                if (!$this->upload->do_upload('image')) {
                    if (file_exists('./images' . $current_image)) {
                        unlink('./images' . $current_image);
                    }
                }
            } else {
                $update_image = $current_image;
            }

            $packageData = array(
                'title' => $this->input->post('title'),
                'tour_location' => $this->input->post(htmlentities('tour_location')),
                'description' => $this->input->post(htmlentities('description')),
                'cost' => $this->input->post('cost'),
                'status' => $this->input->post('status'),
                'upload_path' => $update_image
            );
            
            $this->Admin_model->update($packageData, $id);
            $this->session->set_flashdata('status', 'Package InsertedSuccesfully');
            redirect(base_url('admin/packages/'));
        } else {
            return $this->edit_package($id);
        }
    }

I found a question here and an answer and suggestion but I can't still solve my problem.

How do you use same form for add and edit in PHP?

Can we use insert in place of update?

How to insert form data into database using PHP?

How to insert data with submit button in PHP?